# Version 0.0.0
```dockerfile
FROM ubuntu:20.04
LABEL author="Hugh"
RUN cp /etc/apt/sources.list /etc/apt/sources.list.bak
RUN sudo sed -i 's/archive.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
RUN ["apt","update"]
RUN ["apt","install","git","-y"]
RUN ["apt","install","vim","-y"]
```
# RUN ["apt","install","nginx","-y"]
```dockerfile
RUN ["apt","install","build-essential","g++","-y"]
RUN mkdir -p /usr/share/nginx/html/
RUN echo "Hi, I'm in the container" > /usr/share/nginx/html/index.html
```


# ENTRYPOINT ["nginx"]
```dockerfile
ENTRYPOINT ["/bin/bash"]
EXPOSE 80
```